-src = $(wildcard src/*.c)
-ssrc = $(wildcard src/*.s) data/lut.s
-obj = $(src:.c=.o) $(ssrc:.s=.o)
-dep = $(src:.c=.d)
+src = $(wildcard src/*.c) $(wildcard src/gba/*.c)
+ssrc = $(wildcard src/*.s) $(wildcard src/gba/*.s) data/lut.s
+obj = $(src:.c=.arm.o) $(ssrc:.s=.arm.o)
+dep = $(src:.c=.arm.d)